Still have to have primers, which are hard to come by. One can save your own or find cartridges at a gun range. One can even make their own black powder. You still have to have primers or caps for black powder unless you have a flintlock weapon. Then you have to have a supply of flint.
Time to try bow hunting. Long bow, recurve, crossbow, or compound. Or, try snares and traps. At least until the supplies come back.